Automatic arc-welding method

Details Automatic arc-welding method Automatic arc-welding method

1988-07-14

1989-03-28

Shaw, Clifford C.

Electric heating

Metal heating

By arc

21913021, 21913771, B23K 912

Patent

active

048166391

ABSTRACT:
An automatic arc-welding method, which comprises when welding two objects to be welded together by means of a welding wire along a groove formed between the objects to be welded, continuously detemrining by calculation a target welding current, with which a depth of penetration agrees with a target value thereof, on the basis of the root gap, the material of the welding wire and the like; continuously determining by calculation a target feeding rate of the welding wire, at which an extension length of the welding wire agrees with a target value thereof, on the basis of the welding current, the material of the welding wire and the like; continuously determining by calculation a target welding voltage, with which a length of the arc agrees with a target value thereof, on the basis of the welding current, the feeding rate of the welding wire, the material of the welding wire and the like; and automatically controlling the welding current, the feeding rate of the welding wire and the welding voltage on the basis of the respective target values thus determined.

REFERENCES:
patent: 4532404 (1985-07-01), Boillot et al.
patent: 4591689 (1986-05-01), Brown et al.
patent: 4733051 (1988-03-01), Nadeau et al.

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